diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2aacd83b..112ea26a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,7 +35,7 @@
     * Fix for `+` in image filenames
     * Fix for dot files causing issues with page processing
     * Fix for Uri path detection on Windows platform
-    * Fix for atlernative media resolutions
+    * Fix for alternative media resolutions
     * Fix for modularTypes key properties
 
 # v0.9.27
@@ -49,7 +49,7 @@
     * Added a new `parseLinks` method to Plugins class
     * Added `starts_with` and `ends_with` Twig filters
 2. [](#improved)
-    * Opitmized install of vendor libraries for speed improvement
+    * Optimized install of vendor libraries for speed improvement
     * Improved configuration handling in preparation for admin plugin
     * Cache optimization: Don't cache Twig templates when you pass dynamic params
     * Moved `Utils::rcopy` to `Folder::rcopy`
@@ -63,7 +63,7 @@
     * Fix for URLs with trailing slashes
     * Handle condition where certain errors resulted in blank page
     * Fix for issue with theme name equal to base_url and asset pipeline
-    * Fix to properly nomralize font rewrite path
+    * Fix to properly normalize font rewrite path
     * Fix for absolute URLs below the current page
     * Fix for `..` page references
 
@@ -81,7 +81,7 @@
 2. [](#improved)
     * Refactored media image handling to make it more flexible and support absolute paths
     * Refactored page modification check process to make it faster
-    * User account improvements in preparation for Admin plugin
+    * User account improvements in preparation for admin plugin
     * Protect against timing attacks
     * Reset default system expires time to 0 seconds (can override if you need to)
 3. [](#bugfix)
@@ -209,7 +209,7 @@
     * Improved the markdown Lightbox functionality to better mimic Twig version
     * Fullsize Lightbox can now have filters applied
     * Added a new `mergeConfig()` method to Plugin class to merge system + page header configuration
-    * Added a new `disable()` method to Plugin class to programatically disable a plugin
+    * Added a new `disable()` method to Plugin class to programmatically disable a plugin
     * Updated Parsedown and Parsedown Extra to address bugs
     * Various PSR fixes
 3. [](#bugfix)
@@ -262,7 +262,7 @@
     * Added `publish_date` in page headers to automatically publish page
     * Added `unpublish_date` in page headers to automatically unpublish page
     * Added `dateRange()` capability for collections
-    * Added ability to dynamically control Cache lifetime programatically
+    * Added ability to dynamically control Cache lifetime programmatically
     * Added ability to sort by anything in the page header. E.g. `sort: header.taxonomy.year`
     * Added various helper methods to collections: `copy, nonVisible, modular, nonModular, published, nonPublished, nonRoutable`
 2. [](#improved)
@@ -437,7 +437,7 @@
     * Broke cache types out into multiple directories in the cache folder
     * Removed vendor libs from github repository
     * Various PSR cleanup of code
-    * Various Blueprint updates to support upcoming Admin plugin
+    * Various Blueprint updates to support upcoming admin plugin
     * Added ability to filter page children for normal/modular/all
     * Added `sort_by_key` twig filter
     * Added `visible()` and `routable()` filters to page collections
@@ -510,7 +510,7 @@
     * Addition of Dependency Injection Container
     * Refactored plugins to use Symfony Event Dispatcher
     * New Asset Manager to provide unified management of JavaScript and CSS
-    * Asset Pipelining to provide unification, minify, and optimazation of JavaScript and CSS
+    * Asset Pipelining to provide unification, minify, and optimization of JavaScript and CSS
     * Grav Media support directly in Markdown syntax
     * Additional Grav Generator meta tag in default themes
     * Added support for PHP Stream Wrapper for resource location
diff --git a/system/config/system.yaml b/system/config/system.yaml
index 4d59ee364..365a669c8 100644
--- a/system/config/system.yaml
+++ b/system/config/system.yaml
@@ -32,7 +32,7 @@ pages:
       '<': 'lt'
   types: 'txt|xml|html|json|rss|atom'  # Pipe separated list of valid page types
   expires: 0                           # Page expires time in seconds (604800 seconds = 7 days)
-  last_modified: false                 # Set the last modified date header based on file modifcation timestamp
+  last_modified: false                 # Set the last modified date header based on file modification timestamp
   etag: false                          # Set the etag header tag
 
 cache:
@@ -79,7 +79,7 @@ images:
   debug: false                         # Show an overlay over images indicating the pixel depth of the image when working with retina for example
 
 media:
-  enable_media_timestamp: false        # Enable media timetsamps
+  enable_media_timestamp: false        # Enable media timestamps
   upload_limit: 0                      # Set maximum upload size in bytes (0 is unlimited)
 
 security:
diff --git a/system/src/Grav/Common/Assets.php b/system/src/Grav/Common/Assets.php
index 3662f7d98..4028fa7db 100644
--- a/system/src/Grav/Common/Assets.php
+++ b/system/src/Grav/Common/Assets.php
@@ -47,7 +47,7 @@ class Assets
      * Closure used by the pipeline to fetch assets.
      *
      * Useful when file_get_contents() function is not available in your PHP
-     * instalation or when you want to apply any kind of preprocessing to
+     * installation or when you want to apply any kind of preprocessing to
      * your assets before they get pipelined.
      *
      * The closure will receive as the only parameter a string with the path/URL of the asset and
@@ -509,7 +509,7 @@ class Assets
 
 
     /**
-     * Minifiy and concatenate CSS / JS files.
+     * Minify and concatenate CSS / JS files.
      *
      * @return string
      */
@@ -741,7 +741,7 @@ class Assets
     /**
      * Determine whether a link is local or remote.
      *
-     * Undestands both "http://" and "https://" as well as protocol agnostic links "//"
+     * Understands both "http://" and "https://" as well as protocol agnostic links "//"
      *
      * @param  string $link
      *
@@ -920,7 +920,7 @@ class Assets
      *
      * @param  string $directory
      * @param  string $pattern (regex)
-     * @param  string $ltrim   Will be trimed from the left of the file path
+     * @param  string $ltrim   Will be trimmed from the left of the file path
      *
      * @return array
      */
diff --git a/system/src/Grav/Common/Cache.php b/system/src/Grav/Common/Cache.php
index 4cddca65a..0aefc0727 100644
--- a/system/src/Grav/Common/Cache.php
+++ b/system/src/Grav/Common/Cache.php
@@ -271,7 +271,7 @@ class Cache extends Getters
 
 
     /**
-     * Set the cache lifetime programatically
+     * Set the cache lifetime programmatically
      *
      * @param int $future timestamp
      */
diff --git a/system/src/Grav/Common/Data/DataMutatorTrait.php b/system/src/Grav/Common/Data/DataMutatorTrait.php
index c2110fe50..707b5078a 100644
--- a/system/src/Grav/Common/Data/DataMutatorTrait.php
+++ b/system/src/Grav/Common/Data/DataMutatorTrait.php
@@ -32,7 +32,7 @@ trait DataMutatorTrait
     }
 
     /**
-     * Sey value by using dot notation for nested arrays/objects.
+     * Set value by using dot notation for nested arrays/objects.
      *
      * @example $value = $data->set('this.is.my.nested.variable', true);
      *
diff --git a/system/src/Grav/Common/GPM/GPM.php b/system/src/Grav/Common/GPM/GPM.php
index c33d8cbb5..a6eefce5a 100644
--- a/system/src/Grav/Common/GPM/GPM.php
+++ b/system/src/Grav/Common/GPM/GPM.php
@@ -361,7 +361,7 @@ class GPM extends Iterator
             }
 
             if ($found = $this->findPackage($search)) {
-                // set override respository if provided
+                // set override repository if provided
                 if ($repository) {
                     $found->override_repository = $repository;
                 }
diff --git a/system/src/Grav/Common/GPM/Installer.php b/system/src/Grav/Common/GPM/Installer.php
index b153f9c82..e2ebd0ed2 100644
--- a/system/src/Grav/Common/GPM/Installer.php
+++ b/system/src/Grav/Common/GPM/Installer.php
@@ -158,7 +158,7 @@ class Installer
 
 
     /**
-     * Unnstalls one or more given package
+     * Uninstalls one or more given package
      *
      * @param  string $path     The slug of the package(s)
      * @param  array  $options     Options to use for uninstalling
diff --git a/system/src/Grav/Common/GPM/Upgrader.php b/system/src/Grav/Common/GPM/Upgrader.php
index 413665144..f9e3c0e81 100644
--- a/system/src/Grav/Common/GPM/Upgrader.php
+++ b/system/src/Grav/Common/GPM/Upgrader.php
@@ -65,7 +65,7 @@ class Upgrader
      * Returns the changelog list for each version of Grav
      * @param string $diff the version number to start the diff from
      *
-     * @return array return the chagenlog list for each version
+     * @return array return the changelog list for each version
      */
     public function getChangelog($diff = null)
     {
diff --git a/system/src/Grav/Common/Markdown/ParsedownGravTrait.php b/system/src/Grav/Common/Markdown/ParsedownGravTrait.php
index dcf571564..8b0c4d144 100644
--- a/system/src/Grav/Common/Markdown/ParsedownGravTrait.php
+++ b/system/src/Grav/Common/Markdown/ParsedownGravTrait.php
@@ -23,7 +23,7 @@ trait ParsedownGravTrait
     protected $twig_link_regex = '/\!*\[(?:.*)\]\((\{([\{%#])\s*(.*?)\s*(?:\2|\})\})\)/';
 
     /**
-     * Initialiazation function to setup key variables needed by the MarkdownGravLinkTrait
+     * Initialization function to setup key variables needed by the MarkdownGravLinkTrait
      *
      * @param $page
      * @param $defaults
diff --git a/system/src/Grav/Common/Page/Medium/ImageMedium.php b/system/src/Grav/Common/Page/Medium/ImageMedium.php
index bea2b10d6..f7cc644d3 100644
--- a/system/src/Grav/Common/Page/Medium/ImageMedium.php
+++ b/system/src/Grav/Common/Page/Medium/ImageMedium.php
@@ -216,7 +216,7 @@ class ImageMedium extends Medium
     }
 
     /**
-     * Turn the current Medium inta a Link with lightbox enabled
+     * Turn the current Medium into a Link with lightbox enabled
      *
      * @param  int  $width
      * @param  int  $height
diff --git a/system/src/Grav/Common/Page/Medium/Medium.php b/system/src/Grav/Common/Page/Medium/Medium.php
index 0eb0666ce..48912f3eb 100644
--- a/system/src/Grav/Common/Page/Medium/Medium.php
+++ b/system/src/Grav/Common/Page/Medium/Medium.php
@@ -339,7 +339,7 @@ class Medium extends Data implements RenderableInterface
     }
 
     /**
-     * Turn the current Medium inta a Link with lightbox enabled
+     * Turn the current Medium into a Link with lightbox enabled
      *
      * @param  int  $width
      * @param  int  $height
diff --git a/system/src/Grav/Common/Page/Medium/ThumbnailImageMedium.php b/system/src/Grav/Common/Page/Medium/ThumbnailImageMedium.php
index 3f40200cb..da635223d 100644
--- a/system/src/Grav/Common/Page/Medium/ThumbnailImageMedium.php
+++ b/system/src/Grav/Common/Page/Medium/ThumbnailImageMedium.php
@@ -90,7 +90,7 @@ class ThumbnailImageMedium extends ImageMedium
     }
 
     /**
-     * Turn the current Medium inta a Link with lightbox enabled
+     * Turn the current Medium into a Link with lightbox enabled
      *
      * @param  int  $width
      * @param  int  $height
diff --git a/system/src/Grav/Common/Taxonomy.php b/system/src/Grav/Common/Taxonomy.php
index ebd62f577..226b67d2c 100644
--- a/system/src/Grav/Common/Taxonomy.php
+++ b/system/src/Grav/Common/Taxonomy.php
@@ -76,7 +76,7 @@ class Taxonomy
      *
      * @param  array $taxonomies taxonomies to search, eg ['tag'=>['animal','cat']]
      * @param  string $operator can be 'or' or 'and' (defaults to 'or')
-     * @return Colleciton       Collection object set to contain matches found in the taxonomy map
+     * @return Collection       Collection object set to contain matches found in the taxonomy map
      */
     public function findTaxonomy($taxonomies, $operator = 'and')
     {
diff --git a/system/src/Grav/Common/TwigExtension.php b/system/src/Grav/Common/TwigExtension.php
index 742dc242b..6645100f4 100644
--- a/system/src/Grav/Common/TwigExtension.php
+++ b/system/src/Grav/Common/TwigExtension.php
@@ -108,7 +108,7 @@ class TwigExtension extends \Twig_Extension
      * Truncate content by a limit.
      *
      * @param  string $string
-     * @param  int    $limit    Nax number of characters.
+     * @param  int    $limit    Max number of characters.
      * @param  string $break    Break point.
      * @param  string $pad      Appended padding to the end of the string.
      * @return string
diff --git a/system/src/Grav/Common/Uri.php b/system/src/Grav/Common/Uri.php
index 948c0fdfa..55e1ad806 100644
--- a/system/src/Grav/Common/Uri.php
+++ b/system/src/Grav/Common/Uri.php
@@ -384,7 +384,7 @@ class Uri
     }
 
     /**
-     * Retrun the IP address of the current user
+     * Return the IP address of the current user
      *
      * @return string ip address
      */
diff --git a/system/src/Grav/Common/User/User.php b/system/src/Grav/Common/User/User.php
index 13dc5d8e8..b727fa19b 100644
--- a/system/src/Grav/Common/User/User.php
+++ b/system/src/Grav/Common/User/User.php
@@ -90,7 +90,7 @@ class User extends Data
     }
 
     /**
-     * Checks user authorisation to the action.
+     * Checks user authorization to the action.
      *
      * @param  string  $action
      * @return bool
diff --git a/system/src/Grav/Common/Utils.php b/system/src/Grav/Common/Utils.php
index 22ba7b7d0..7262c498c 100644
--- a/system/src/Grav/Common/Utils.php
+++ b/system/src/Grav/Common/Utils.php
@@ -92,7 +92,7 @@ abstract class Utils
             if (strlen(preg_replace('/<.*?>/', '', $text)) <= $length) {
                 return $text;
             }
-            // splits all html-tags to scanable lines
+            // splits all html-tags to scannable lines
             preg_match_all('/(<.+?>)?([^<>]*)/s', $text, $lines, PREG_SET_ORDER);
             $total_length = strlen($ending);
             $truncate = '';
@@ -157,7 +157,7 @@ abstract class Utils
         }
         // if the words shouldn't be cut in the middle...
         if (!$exact) {
-            // ...search the last occurance of a space...
+            // ...search the last occurrence of a space...
             $spacepos = strrpos($truncate, ' ');
             if (isset($spacepos)) {
                 // ...and cut the text in this position
diff --git a/system/src/Grav/Console/Cli/SandboxCommand.php b/system/src/Grav/Console/Cli/SandboxCommand.php
index 43cfc230c..a5a6ce126 100644
--- a/system/src/Grav/Console/Cli/SandboxCommand.php
+++ b/system/src/Grav/Console/Cli/SandboxCommand.php
@@ -281,7 +281,7 @@ class SandboxCommand extends Command
     private function perms()
     {
         $this->output->writeln('');
-        $this->output->writeln('<comment>Permisions Initializing</comment>');
+        $this->output->writeln('<comment>Permissions Initializing</comment>');
 
         $dir_perms = 0755;
 
diff --git a/system/src/Grav/Console/Gpm/SelfupgradeCommand.php b/system/src/Grav/Console/Gpm/SelfupgradeCommand.php
index 5e8f51a04..9647470f1 100644
--- a/system/src/Grav/Console/Gpm/SelfupgradeCommand.php
+++ b/system/src/Grav/Console/Gpm/SelfupgradeCommand.php
@@ -96,7 +96,7 @@ class SelfupgradeCommand extends Command
             exit;
         }
 
-        // not used but pre-loaded just in case!
+        // not used but preloaded just in case!
         new ArrayInput([]);
 
         $questionHelper = $this->getHelper('question');
diff --git a/system/src/Grav/Console/Gpm/UpdateCommand.php b/system/src/Grav/Console/Gpm/UpdateCommand.php
index bc987d52e..eef10039b 100644
--- a/system/src/Grav/Console/Gpm/UpdateCommand.php
+++ b/system/src/Grav/Console/Gpm/UpdateCommand.php
@@ -160,7 +160,7 @@ class UpdateCommand extends Command
         $commandExec = $installCommand->run($args, $this->output);
 
         if ($commandExec != 0) {
-            $this->output->writeln("<red>Error:</red> An error occured while trying to install the extensions");
+            $this->output->writeln("<red>Error:</red> An error occurred while trying to install the extensions");
             exit;
         }